package com.ywj.config;

import org.apache.kafka.clients.producer.ProducerConfig;
import org.apache.kafka.common.serialization.StringSerializer;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.kafka.core.DefaultKafkaProducerFactory;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.kafka.core.ProducerFactory;

import java.util.HashMap;
import java.util.Map;

/**
 * 配置Kafka生产者
 */
@Configuration
public class KafkaProducerConfig {
    @Value("${spring.kafka.bootstrap-servers}")
    private String bootstrapServers;

    /**
     * 设置Kafka生产者的配置
     * @return
     */
    @Bean
    public Map<String, Object> producerConfigs(){
        Map<String, Object> props = new HashMap<>();
        props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
        props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
        props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
        return props;
    }

    /**
     * 创建Kafka生产者工厂
     * @return
     */
    @Bean
    public ProducerFactory<String, String> producerFactory(){
        return new DefaultKafkaProducerFactory<>(producerConfigs());
    }

    /**
     * 创建KafkaTemplate实例
     * @return
     */
    @Bean
    public KafkaTemplate<String, String> kafkaTemplate(){
        return new KafkaTemplate<>(producerFactory());
    }

}
